Max no of circuits per panel
- Thread starter m sleem
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- New Jersey
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- Journeyman Electrician
1Ø or 3Ø?
ron
Senior Member
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- New York, 40.7514,-73.9925
The cost of panels >42 circuits in a single enclosure are pretty high compared to (2) 42 pole panels with one of them having feed-through lugs to serve the other since they are still pretty custom.
70 # 1phase
petersonra
Senior Member
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- Northern illinois
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- Semi-retired engineer
I think you would be better off with two 42 circuit panels. If possible, you might be able to reduce your labor and material costs by where you locate the panels so your home runs are easier.
- Location
- New Jersey
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- Journeyman Electrician
Eaton has 60, 72, and 84 circuit panelboards not sure if they make them in 1Ø. What voltage and ampacity?
electrofelon
Senior Member
- Location
- Cherry Valley NY, Seattle, WA
- Occupation
- Electrician
electrofelon
Senior Member
- Location
- Cherry Valley NY, Seattle, WA
- Occupation
- Electrician
If you are talking off the shelf loadcenters, I know almost everyone makes a 200A 40/80, but not sure who in their right mind would fill a loadcenter with tandems and put 70 circuits in it.....
Which models?
480/277v ,
Model name please?
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- New Jersey
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- Journeyman Electrician
1Ø, 480?
electrofelon
Senior Member
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- Cherry Valley NY, Seattle, WA
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- Electrician
Did you look at the picture? It gives the part number scheme. Here is a link to the entire document
hillbilly1
Senior Member
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- North Georgia mountains
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- Owner/electrical contractor
I was about to say with single phase, the 80 wouldn’t do much good in residential due to arc faults, but the op has come back and said 480?
- Location
- San Francisco Bay Area, CA, USA
- Occupation
- Electrical Engineer
But... the high circuit count versions are PANELBOARDS, which are significantly more expensive than LOAD CENTERS. In the trade, the terms are often used interchangeably but from the manufacturer standpoint, they are not. So you might in fact spend more for one panelboard that holds 80 circuits than you will for two load centers that hold 42 each.
But I’m confused... first you said 70 circuit 1 phase, then you said 480/277. So you have a 480V SINGLE PHASE service? Not unheard of, but highly unusual. If it really is 480V, you are looking at a panelboard anyway, so you may as well get an 80 circuit version. I don’t know of anyone that makes a 480V single phase panelboard with that many spaces on only two busses though. My suspicion however is that you have 480/277 3 phase, but are only feeding single phase 277V lighting loads. You would still buy a 3 phase panel and feed it with 3 phase 4 wire.
480V panelboards don’t use twins...
But I’m confused... first you said 70 circuit 1 phase, then you said 480/277. So you have a 480V SINGLE PHASE service? Not unheard of, but highly unusual. If it really is 480V, you are looking at a panelboard anyway, so you may as well get an 80 circuit version. I don’t know of anyone that makes a 480V single phase panelboard with that many spaces on only two busses though. My suspicion however is that you have 480/277 3 phase, but are only feeding single phase 277V lighting loads. You would still buy a 3 phase panel and feed it with 3 phase 4 wire.
480V panelboards don’t use twins...
Last edited:
- Location
- New Jersey
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- Journeyman Electrician
Do "load centers" come in 480 volts? I don't think his choice will include a load center at that voltage.
- Location
- San Francisco Bay Area, CA, USA
- Occupation
- Electrical Engineer
No. I was editing when you responded because I saw the reference to 480V after I posted.
Thanks
Are you sure those numbers >54 are not the enclosure height ?
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